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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. See the documentation for help with subscribing to or submitting Circulars.

Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

23733 results found.

  1. Konus-Wind observation of GRB 120323A
  2. IPN Triangulation of GRB 120323A (short/very intense)
  3. Konus-Wind observation of GRB 120324A
  4. GRB 120323A: Fermi GBM detection
  5. GRB 120324A: GROND observations
  6. GRB 120324A: Swift-BAT refined analysis
  7. GRB 120324A: TAROT La Silla observatory optical observations
  8. GRB 120324A: Liverpool Telescope optical candidate
  9. GRB 120324A: Swift detection of a burst
  10. GRB 120316A : Suzaku WAM observation of the prompt emission
  11. GRB 120320A: Zadko optical observations
  12. GRB 120320A, the review of the sky area in plate archives
  13. GRB 120320A: Swift/UVOT Upper Limits
  14. GRB 120320A: MITSuME Okayama Optical upper limits
  15. GRB 120320A, Swift-BAT refined analysis
  16. Konus-Wind observation of GRB 120316A
  17. IPN Triangulation of GRB 120316A
  18. GRB 120320A: Swift detection of a burst
  19. GRB 111228A: possible detection of the SN with the TNG
  20. Trigger 517876 is a Swift detection of GX 5-1
  21. GRB 120312A, the review of the sky area in plate archives
  22. GRB 120311A, the review of the sky area in plate archives
  23. GRB 120312A: Swift/UVOT Upper Limits
  24. GRB 120312A: NOT observations
  25. GRB 120312A: Swift-XRT refined Analysis
  26. GRB 120312A: Swift-BAT refined analysis
  27. GRB 120312A: Swift detection of a burst
  28. GROND observations of GRB 120311A
  29. GRB 120311B: MITSuME Okayama Optical upper limits
  30. GRB 120311B: Faulkes Telescope North observations
  31. GRB 120311B: Swift-BAT refined analysis
  32. GRB 120311A, Swift-BAT refined analysis
  33. GRB 120311B: Swift detection of a burst
  34. GRB 120311A: CAHA 1.23m I-band early observations
  35. GRB 120311A: Swift-XRT observations
  36. GRB 120311A: Liverpool Telescope optical candidate
  37. GRB 120311A: Swift detection of a burst
  38. GRB 120308A : LOAO optical observation
  39. GRB 120308A: RTT150 optical observations
  40. GRB 120302A: RTT150 optical observations
  41. GRB 120308A: 1.23m CAHA I-band observations
  42. GRB120308A: MITSuME Ishigakijima Optical Upper Limits
  43. GRB 120308A: Swift/UVOT Detection
  44. GRB 120308A: Swift-BAT refined analysis
  45. GRB 120308A: confirmation of the optical afterglow
  46. GRB 120308A: Liverpool Telescope optical afterglow candidate
  47. GRB 120308A: Swift detection of a burst
  48. GRB 120302A, the review of the sky area in plate archives
  49. GRB 120302A: Swift-BAT refined position and a possible XRT and UVOT counterpart
  50. GRB 120305A: Swift-BAT refined analysis
  51. GRB 120305A - Liverpool Telescope Observations
  52. GRB 120302A: GROND detection of an afterglow candidate
  53. GRB 120302A, Swift-BAT refined analysis
  54. GRB 111222A: Swift observation on 2012 February 06/07
  55. GRB 120302A found in ground analysis of BAT data
  56. GRB 120229A, Swift-BAT refined analysis
  57. GRB 120229A: Swift detection of a short burst
  58. Konus-Wind observation of GRB 120226A
  59. GRB 120226A: Fermi-GBM and Fermi-LAT detections; LAT position retraction
  60. IPN Triangulation of GRB 120226A
  61. GRB 120224A: GROND detection of the afterglow candidate
  62. GRB 120219A, the review of the sky area in plate archives
  63. GRB 120224A: Swift-XRT refined Analysis
  64. Swift Trigger 516027 is CC Eri
  65. GRB 120224A: Swift/UVOT Upper Limits
  66. GRB 120224A: Swift-BAT refined analysis
  67. GRB 120224A: FTN optical observations
  68. GRB 120224A: Swift detection of a burst
  69. GRB_120215, the_review_of_the_sky_area_in_plate_archives
  70. GRB 120215A: MITSuME Akeno Optical upper limits
  71. GRB 120219A: MITSuME Okayama Optical upper limits
  72. GRB 120219A: Swift-BAT refined analysis
  73. GRB120219A: TNT optical afterglow candidates
  74. GRB 120219A: MASTER-NET prompt and early optical observations
  75. GRB 120219A: Swift detection of a burst
  76. GRB 120218A: Swift-BAT refined analysis
  77. GRB 120218A: Swift detection of a burst
  78. GRB 120215A: MITSuME Okayama Optical upper limits
  79. Fermi GBM detection of an SGR-like burst
  80. Skynet/PROMPT observations of GRB120215A
  81. GRB 120215A: Swift-BAT refined analysis
  82. GRB 120215A: Swift detection of a burst
  83. GRB 120211A : LOAO optical observations
  84. GRB 120212A: GMG optical observation
  85. GRB 120212A: MITSuME Ishigakijima Optical Observation
  86. GRB 120213A: Swift-BAT refined analysis
  87. GRB 120213A: Swift detection of a burst
  88. GRB 120212A: Swift/UVOT Detection
  89. GRB 120212A: Swift-BAT refined analysis
  90. GRB 120212A: Kanata/HOWPol optical observation
  91. GRB 120212A: Swift-XRT observations
  92. GRB 120212A: Faulkes Telescope South afterglow candidate
  93. GRB 120211A: GROND Upper limits
  94. GRB 120212A: Swift detection of a burst
  95. GRB 120211A: MITSuME Okayama and Ishigakijima Optical upper limits
  96. GRB 120211A: Swift/UVOT Upper Limits
  97. GRB 120211A: MASTER early optical observations
  98. GRB 120211A: Swift-BAT refined analysis
  99. GRB 120211A - Faulkes Telescope South Observations
  100. GRB 120211A: Swift detection of a burst

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